Trade in

AT and T had promotion at sams club to trade in iPhone 11 for IPhone 14. I was told that as long as the trade in phone is not broken and in good condition, I will get credit of $750 to offset the cost of the new phone. After waiting for more than a month, I just receive a gift card of $130 in the mail since the company cannot confirm promotion eligibility.  My old phone  worths more than $130 
This is the scam!!! I will call AT and T to find out why they only give me a credit of $130. If I do not get the credit as promised, I will file the complaint with the consumer protection agency so others will not be the victim of the AT and T scam in getting people switching courier.